Spectroscopy and Imaging Equipment

Spectroscopy and Imaging Equipment

Raman Lab at Victoria University

The Raman Lab hosts state-of-the-art Raman microscopes with low temperature facilities (suitable for measurements down to 8 K). Various materials in this lab can be analysed: semiconductor devices, chemicals/biomedical products, pharmaceuticals, polymers, materials and thin films etc. A large number of lasers are available for Raman excitation: He-Cadmium UV laser (325 nm), blue and green lines of Ar-ion lasers (454 nm to 514 nm), red HeNe laser (633 nm) near -infrared laser diode (785 nm). The Raman Lab also has a state-of-the-art spectroscopic ellipsometer covering a wavelength range from 196 nm to 2000 nm, and a T64000 spectrometer, which can collect spectra at very low wave numbers i.e. very close to the laser line (30-40cm-1). Pablo and Eric are world experts in surface enhanced Raman spectroscopy.

Please contact Eric Le Ru for more information.
Image Gallery of Spectroscopy and Imaging Equipment


Electron Microscopy Lab at Victoria University

Scanning and Transmission Electron Microscopes are mainly used to analyse nanoparticles and quantum dots synthesised in solution in this Lab. The SEM and TEM facilities are accessible to staff and students across the science and engineering departments. The lab contains two SEM machines with a resolution capability as small as ~5nm. The magnification is about 500,000x. The TEM has a resolution of ~0.15nm with a magnification as large as 8,000,000x Both the SEM and TEM have Energy Dispersive Spectroscopy capability as well. A cryo-attachement for the SEM is also available to take images of liquids, soft materials or biological tissues.

Please contact Richard Tilley or Kathryn McGrath or David Flynn for more information.

X-ray Lab

A large set of X-ray diffractometers are available through Massey, Auckland, Canterbury, Otago and Victoria Universities. With such tools you can, for example, identify materials by their X-ray patterns, determine the structure of crystalline materials, the shape and size (on the scale of 1 to 150 nm) and the strain/stress in your films. Analysis is well-suited for characterization of solid, liquid and film samples. It includes at VUW an X-ray powder diffractometer (Richard Tilley), and a small angle X-ray scattering diffractometer (Kathryn McGrath), with temperature control from -170 to 300°C with a variety of sample geometries. A Rigaku spider X-ray diffractomer, funded via the MacDiarmid, designed for the structural analysis of small molecules, protein crystals and crystalline powders is available at Massey University (Shane Telfer). Single crystal diffractometers are also available at Canterbury , Auckland , Otago Universities.

Optical Spectroscopy Lab at Victoria University

Two groups formed this lab: the ultrafast laser group and the radiation imaging and detection group. The former is mainly devoted to the study of the effect of very short laser pulses, typically about 30-100 fs, on organic solar cells or conjugated polyelectrolytes, but it is, in theory, well-suited to a wide range of other materials. Amplified ultrafast Ti:sapphire laser, optical parametric amplifer and spectrally-resolved photocurrent are also used in this Lab. The Imaging group focuses their research on solid-state materials for the detection of X-rays, gamma rays and neutrons. For this purpose a large range of spectrometers are used: fluorescence spectrometer (200-1500 nm) with measurements down to 12 K, a spectrofluorometer, and an optical absorption spectroscopy setup. Thermal analysis experiments are also possible using a differential scanning calorimeter and a thermogravimetric analyser.

Please contact Justin Hodgkiss or Andy Edgar for more information.

The University of Canterbury Electron Microscopy Centre

The UCEM is the most comprehensive electron microscopy laboratory in New Zealand with 4 operational electron microscopes: 2 scanning and 2 transmission. A full range of short courses are available to train researchers from the University of Canterbury and across other institutions. MacDiarmid students are also welcome to use these facilities with training or with the assistance of our technical staff. The three major microscopes available are a Philips CM200 high resolution analytical transmission electron microscope, a JEOL JSM 7000F field emission high resolution scanning electron microscope, and a JEOL JSM 6100 scanning electron microscope.

Please contact Mike Flaws for more information.

Ion Beam Analysis Lab at GNS

The Ion Beam Facility at GNS is ideally suited for accurate determination of the concentration of elements in materials, depth profiling to highlight crystalline defects, observing the formation of amorphous layers on the surface or at material interfaces, and to check the epitaxy quality of a thin film on a substrate. A large range of IBF are accessible at GNS such as Rutherford backscattering, particle induced X-ray emission, nuclear reaction analysis, ion beam implantation and sputterer services are also available along with Hall effect measurement capability, atomic force microscopy and a field emission test system.

Please contact Andreas Markwitz for more information.

Surface and Materials Science Lab at the University of Auckland

The Research Centre for Surface and Materials Science is unique in materials science and engineering in New Zealand, being a research facility available to University researchers and a commercial facility available to industry. The facilities to assist with the materials characterisation and research needs are complementary and various such as scanning electron microscopy with energy dispersive spectroscopy and electron back scatter diffraction for material composition and structure determination. This Centre provides access to X-ray and UV photoelectron spectroscopy to determine, for example, the electronic structure of solids, quantitiation of elemental content and indentification of different oxidation states. An atomic force microscope is also available.

Please contact Jim Metson for more information.

Light scattering and optical tweezers lab at Massey University Palmerston North

The light scattering and optical tweezers lab at Massey University has a diverse range of equipment to study soft materials. Quasi-elastic light scattering techniques, including diffusing wave spectroscopy and multi-speckle diffusing wave spectroscopy, allow measurements of material dynamics in a temporal range of less than one Hertz to megahertz. Microscopy techniques, such as multiple particle tracking, can provide further insights into the soft material of interest. The optical tweezers setup uses two Nd:YAG 1064nm lasers to impart small forces, in the order of 1 to 100’s of pico Newtons, on micron sized dielectic particles. A plethora of different experiments can be performed using this optical tweezers setup, from single molecule and colloidal interactions to microrheological measurements.

Contact Bill Williams for more information.

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